Heat-exchange apparatus



Aug. 5 1924.- 1,503,846

0. PIETTE HEAT EXCHANGE APPARATUS Filed Feb. 26. 1921 Full Patentedfisug. 5, 1924.

we is err f V omvrnnrrnrrn, or BRUSSELS, BELGIUM.

' HEAT-EQQCfI-IANGE APPARATUS.

Application filed February 26, 1921. Serial No. 448,194.

.ing to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to whichit vappertains to make and use the same, reference being had to accompanying drawings, and to letters or figures of'reii'ercnce' marked therein, which form a cation. 7 V

. The present invention relates to an apparatus for exchanging heat betweentwo-tluids, such as, for example, gas and air, consisting of juxtaposed chambers, the odd chami- 'bers of the series being traversedb-y one of the said fluids, and the even ones by the other of said'fiuids. 1 Heat-exchangers of the kind hitherto constructed have the disadvantage. ofjbeingof complicated mounting and 3 maintenance, and, in addition, of eflecting'the exchanges of heat under unfavourable conditions.

The object of the pres-ent invention is to obviate these disadvantages.

According to the;present invention the heat exchanger consists of juxtaposed vertical chambers, the odd chambers of the series being externally interconnected to form the circuit for one of said fluids and the. even chambers being externally interconnected to form the circuit forthe other of said fluids and each two consecutiveschambers being separated by a single thickness of sheet iron, the chambers traversed by the;heated 'fluid being interconnected at their upper part, and the chambers traversed by theheating fluid being interconnected alternately at their upper part and at their lower part.

A certain number of the said chambers forms separated elements each of which is constructed completely independent of the others and made in the same manner.

In a form which is particularly advantageous for carrying the invention into effeet, the chambers are placed-vertically, a middle battle being provided in each of the chambers traversed by the heated fluid in order to lead the incoming air directly at the bottom of the chamber, said air rising at the other side of the baffle, according to the lessening of its density.

' bers has its part of this specifi The upper connecting conduits of the chambers for the heating fluid may be provided with openings for cleaning, whilst the lower connecting conduits are provided with orifices for evacuation of dust and other impurities.

The invention also provides for a mode of constructing the heat exchanger which is especially advantageous, in which the sheetiron constituting the partitions of the chamjoints arranged outside the apparatus. V 7

By way oiiexample, a form of carrying the invention into efiect is illustrated by the accompanying drawings, .in which V Fig. l is a view of the apparatus partly in elevation andpartly in longitudinal vertical section, the section being taken along the line 11 of Fig. 2.

Fig. 2 is a View of the apparatus partly in plan and partly in horizontal section, the section being taken along the line 2-2 of Fig. 1. v

The apparatus consists of juxtaposed elements of rectangular section, which can be easily separatedtrom each other and which have a width indicated by in Fig. 1, each of said elements comprising four juxtaposed vertical rectangular chambers, two odd interconnected chambers and two even interconnected chambers, and said elements be ing connected to each other by external joints J.

As has been described above, the odd chambers G interconnected at their base by means of hoppers E and at the upper part bymeans of pipes M bent twice form the heating circuit and the even chambers H also interconnected by means of pipes N bent twice form the heated circuit.

In this manner two separate circuits are formed, the gases which leave the gas pro ducers passing through one of the circuits, for instance, through the circuit G, and the air which goes to hearths of the gas-producers passing through the other circuit H.

The heat is exchanged through plane partitions which separate-the gas chambers G from the air chambers H.

The admission of the gas is shown in Fig. 1 at A and its outlet at B. The admission of the air is shown in Fig. 2 at C and its outlet at D.

The air enters laterally at the upper part of the chamber H and is compelled to pass under a middle bafile L through the bottom V of the chamber in order to risea-gain on the other side and leave the chamber through a pipe provided at the side of the said chamher at its upper part.

As shown in the drawing, the axis of the circuit of the gas is in a vertical plane; this arrangement allows the mixture of dust and tarry bodies to fall along the plane walls;

1. An apparatus for heat exchange be tweentwo fluids comprising juxtaposed vertical rectangular chambers, a number of which form separated elements, each of which is constructed completely independently of the others and made in the same manner, said chambers being interconnected in pairs, andieachof two consecutive chambers being separated by a single thickness ofplane sheet iron, the 'cliambers traversed by the heated fluid being interconnected at their upper parts, the chambers traversed by the heating fluid being connected alternately at their upper parts and at their lower parts. a V

2. An apparatus for heat exchange be tween two fluids comprising juxtaposed vertical rectangular chambers, a number of which form separated elements each of Vwhich' is constructed completely independentl'y of the others and made'in the same manner, sa-id' chambers being interconnected npa rs, and each of two consecutive cham-' bers' being separated by a single thickness of plane sheet iron, the chambers traversed by theheated fluid being interconnected at their upper parts, the chambers traversed by the heating fluid being connected alter! nately at their upper, and at their lower parts, a middle ba'lfle being prorided in each of the chambers traversed by the heated fluid in order to lead the incoming heated fluid directly tothe bottom of its chamber,

'saidheated fluid rising'on the other side of the battle accordingly as its density decreases. 3 V r y 3. An apparatus for'heat exchange be tween two fluids comprising juxtaposed vertical rectangular chambers, ajnumber of which form separated elements each of which is constructed completely independently of the others and made in the same manner, saidchambers being interconnected in pairs and each of two consecutive chambers being separated by a singlerthickness of plane sheet iron, the chambers navel-sea by the heated fluid being interconnected at their upper parts, alternate upper and lower connectingconduits for the chambers trave'rsed by the heating fluid, the upper con' nectingfconduits of the chambers tortlie heating fluid being provided-with openings for cleaning whilst the" lower connecting conduits of eachof the same chambers are provided with orifices for" evacuatii'ig dust and otheril'r'lpu'r'ities'. V

4. An apparatus 'for'heat, exchange between two fluids comprising juxtaposed vertical nectangular chambers, a] certain.

number of which fo'rmseparated elements, each of which isconstructed completely in;

dependently ofthe others and made in the same manner, said chambers-being interconnected in pairs and each of two consecutivechambers being'se 'narated by asingle thickness of plane sheet iron, the joints of whichare plaoed on the outside, the cha'mbers traversed by theh eated fluid being interconnected at their upper part, alternate upper and lower connecting' conduits r91- the chambers traversed by-theheating'flu-id,

the upper connecting conduits of the chambers for the heating fluid being provided w th openings for cileaninglwhilst the lower connecting conduits of eacli of the same chambers are provided with orifices for evacuating dust and other impurities.

Intestimony whereof I atlixmy signature in presence oft'wojwitnesses. i

' 'QLIVIEE PlET-TE; -Witnessesi G; .NOEL, LEONARD LEvA, 

